May 2019 – Jul 2024 · 5 yrs 2 mos

• ◦ Active contributor to GTFS, the industry standard for public transit data. Engaged with stakeholders to develop extensions for real-time detours and trip interlining. Member of the working group on fares.
• ◦ Prioritized scaling and reliability for the trip planning service (a NodeJS frontend to a C++ module). Slashed memory usage by 75% and implemented concurrency. Established a frequent and consistent release schedule.
• ◦ Provided leadership on cross-team collaboration. Delivered training on threadsafe programming and introduced Clang thread safety analysis. Worked with the static data team to adopt an improved data structure, achieving a ∼100× cardinality reduction for typical datasets while increasing code reuse.
• ◦ Developed custom tooling to speed migration to Python 3, utilizing dynamic tracing and AST patching.
• ◦ Took on an operational role, provisioning Transit’s CI environment, ETL job servers, Kong API gateway,
• and the trip planner team’s Kubernetes services.

Jan 2018 – Jan 2019 · 1 yr

• ◦ Full-stack work on CloudMC, a Java-based web app enabling clients to manage cloud orchestration services
• including CloudStack and OpenStack.
• ◦ Redesigned activity log search interface, refactored the role-based access control system with performance in mind, and participated in the migration of the UI from AngularJS to VueJS.